1980 K10 emission vacuum hookup

[A-B Slinger]

Looking for someone knowledgable in the hookup of vacuum lines for the emissions. The last item I had to obtain for final hookup was the EFE-TVS. On the line route photo it shows the vacuum lines stacked to the EFE-TVS but not numbered. As can be seen in the photo mine has #1 upper right , #2 lower right, #3 upper left and #4 lower left. Any help would be appreciated.